/Engine/Source/Editor/CurveEditor/Public/Tree/CurveEditorTree.h
Retrieve an item from its ID or nullptr if the ID is not valid
[FCurveEditorTreeItem](API\Editor\CurveEditor\Tree\FCurveEditorTreeItem) * FindItem ( [FCurveEditorTreeItemID](API\Editor\CurveEditor\FCurveEditorTreeItemID) ItemID )